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* of: Always use 'struct device.of_node' to get device node pointer.Grant Likely2010-05-185-8/+8
| | | | | | | | | | | | The following structure elements duplicate the information in 'struct device.of_node' and so are being eliminated. This patch makes all readers of these elements use device.of_node instead. (struct of_device *)->node (struct dev_archdata *)->prom_node (sparc) (struct dev_archdata *)->of_node (powerpc & microblaze) Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-04-171-3/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: Ignore LVDS EDID when it is unavailabe or invalid drm/i915: Add no_lvds entry for the Clientron U800 drm/i915: Rename many remaining uses of "output" to encoder or connector. drm/i915: Rename intel_output to intel_encoder. agp/intel: intel_845_driver is an agp driver! drm/i915: introduce to_intel_bo helper drm/i915: Disable FBC on 915GM and 945GM.
| * agp/intel: intel_845_driver is an agp driver!Daniel Vetter2010-03-251-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ... not a GTT driver. So the additional chipset flush introduced in commit 2162e6a2b0cd5acbb9bd8a3c94e1c1269b078295 Author: Dave Airlie <airlied@redhat.com> Date: Wed Nov 21 16:36:31 2007 +1000 agp/intel: Add chipset flushing support for i8xx chipsets. to fix a GTT problem makes absolutely no sense. If this would really be needed for AGP chipsets, too, we should add it to all i8xx agp drivers, not just one. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Eric Anholt <eric@anholt.net>
* | hvc_console: Fix race between hvc_close and hvc_removeAnton Blanchard2010-04-081-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I don't claim to understand the tty layer, but it seems like hvc_open and hvc_close should be balanced in their kref reference counting. Right now we get a kref every call to hvc_open: if (hp->count++ > 0) { tty_kref_get(tty); <----- here spin_unlock_irqrestore(&hp->lock, flags); hvc_kick(); return 0; } /* else count == 0 */ tty->driver_data = hp; hp->tty = tty_kref_get(tty); <------ or here if hp->count was 0 But hvc_close has: tty_kref_get(tty); if (--hp->count == 0) { ... /* Put the ref obtained in hvc_open() */ tty_kref_put(tty); ... } tty_kref_put(tty); Since the outside kref get/put balance we only do a single kref_put when count reaches 0. The patch below changes things to call tty_kref_put once for every hvc_close call, and with that my machine boots fine. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | virtio: disable multiport console support.Michael S. Tsirkin2010-04-081-8/+41
| | | | | | | | | | | | | | | | | | | | | | | | Move MULTIPORT feature and related config changes out of exported headers, and disable the feature at runtime. At this point, it seems less risky to keep code around until we can enable it than rip it out completely. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | virtio: console makes incorrect assumption about virtio APIRusty Russell2010-04-081-7/+3
| | | | | | | | | | | | | | | | | | | | | | The get_buf() API sets the second arg to the number of bytes *written* by the other side; in this case it should be zero as these are output buffers. lguest gets this right (obviously kvm's console doesn't), resulting in continual buildup of console writes. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Amit Shah <amit.shah@redhat.com>
* | virtio: console: Fix early_put_chars usageFrançois Diakhaté2010-04-081-3/+3
| | | | | | | | | | | | | | | | | | | | Currently early_put_chars is not used by virtio_console because it can only be used once a port has been found, at which point it's too late because it is no longer needed. This patch should fix it. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | frv: hide uncached_access() when pgprot_noncached is not #definedDavid Howells2010-04-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hide uncached_access() when pgprot_noncached is not #defined. This prevents the following warning: CC drivers/char/mem.o drivers/char/mem.c:229: warning: 'uncached_access' defined but not used Repairs d7d4d849b4e3acc405ec222884936800ffb26d48 ("drivers/char/mem.c: cleanups"). Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | /dev/mem: allow rewindingEric Dumazet2010-04-071-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | commit dcefafb6 ("/dev/mem: dont allow seek to last page") inadvertently disabled rewinding on /dev/mem. This broke x86info for example. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | vfs: rename block_fsync() to blkdev_fsync()Andrew Morton2010-04-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Requested by hch, for consistency now it is exported. Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Anton Blanchard <anton@samba.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Jan Kara <jack@suse.cz> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | raw: fsync method is now requiredAnton Blanchard2010-04-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 148f948ba877f4d3cdef036b1ff6d9f68986706a (vfs: Introduce new helpers for syncing after writing to O_SYNC file or IS_SYNC inode) broke the raw driver. We now call through generic_file_aio_write -> generic_write_sync -> vfs_fsync_range. vfs_fsync_range has: if (!fop || !fop->fsync) { ret = -EINVAL; goto out; } But drivers/char/raw.c doesn't set an fsync method. We have two options: fix it or remove the raw driver completely. I'm happy to do either, the fact this has been broken for so long suggests it is rarely used. The patch below adds an fsync method to the raw driver. My knowledge of the block layer is pretty sketchy so this could do with a once over. If we instead decide to remove the raw driver, this patch might still be useful as a backport to 2.6.33 and 2.6.32. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Christoph Hellwig <hch@lst.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Jens Axboe <jens.axboe@oracle.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Tested-by: Jeff Moyer <jmoyer@redhat.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | devmem: handle class_create() failureAnton Blanchard2010-04-071-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | I hit this when we had a bug in IDR for a few days. Basically sysfs would fail to create new inodes since it uses an IDR and therefore class_create would fail. While we are unlikely to see this fail we may as well handle it instead of oopsing. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | mxser: spin_lock() => spin_lock_irq()Dan Carpenter2010-04-071-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This should be spin_lock_irq() to match the spin_unlock_irq(). Originally it was a lock_kernel() but we switched everything to spin_lock_irq() last November. [akpm@linux-foundation.org: fix the MOXA_ASPP_MON case too (per Jiri)] Signed-off-by: Dan Carpenter <error27@gmail.com> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | drivers/char/amiserial.c: add missing local_irq_restoreJulia Lawall2010-04-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rs_init() is failing to restore interrupts on two error paths, and is incorrectly calling tty_unregister_driver() with local interrupts disabled. Fix these things by disabling interrupts later, after the reauest_irq() calls. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * local_irq_save (E1,...); ... when != E1 * return ...; ...+> } // </smpl> [akpm@linux-foundation.org: reimplement the fix] Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'master' into export-slabhTejun Heo2010-04-051-0/+2
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| * | tty: release_one_tty() forgets to put pidsOleg Nesterov2010-04-021-0/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | release_one_tty(tty) can be called when tty still has a reference to pgrp/session. In this case we leak the pid. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reported-by: Catalin Marinas <catalin.marinas@arm.com> Reported-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-3055-14/+44
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-03-241-3/+31
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: drm/i915: Stop trying to use ACPI lid status to determine LVDS connection. drm/intel: fix up set_tiling for untiled->tiled transition drm/i915: Set up the documented clock gating on Sandybridge and Ironlake. agp/intel: Don't do the chipset flush on Sandybridge. agp/intel: Respect the GTT size on Sandybridge for scratch page setup. drm/i915: fix small leak on overlay error path drm/i915: Avoid NULL deref in get_pages() unwind after error. drm/i915: Fix check with IS_GEN6 drivers/gpu/drm/i915/intel_bios.c: fix continuation line formats drm/i915: Enable VS timer dispatch. drm/i915: Rename FBC_C3_IDLE to FBC_CTL_C3_IDLE to match other registers drm/i915: remove an unnecessary wait_request() drm/i915: Don't bother with the BKL for GEM ioctls.
| * agp/intel: Don't do the chipset flush on Sandybridge.Eric Anholt2010-03-181-2/+7
| | | | | | | | | | | | | | | | This CPU should be coherent with graphics in this direction, though flushing graphics caches are still required. Fixes a system reset on module load on Sandybridge with 4G+ memory. Signed-off-by: Eric Anholt <eric@anholt.net>
| * agp/intel: Respect the GTT size on Sandybridge for scratch page setup.Eric Anholt2010-03-181-1/+24
| | | | | | | | | | | | | | | | | | This is similar to 14bc490bbdf1b194ad1f5f3d2a0a27edfdf78986 which respected it for how much of the GTT we would actually use. Now we won't clear beyond allocated memory when filling the GTT with scratch page addresses. Signed-off-by: Eric Anholt <eric@anholt.net>
* | virtio: console: Check if port is valid in resize_consoleAmit Shah2010-03-221-0/+4
| | | | | | | | | | | | | | | | The console port could have been hot-unplugged. Check if it is valid before working on it. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* | virtio: console: Generate a kobject CHANGE event on adding 'name' attributeAmit Shah2010-03-221-2/+9
| | | | | | | | | | | | | | | | | | | | | | When the host lets us know what 'name' a port is assigned, we create the sysfs 'name' attribute. Generate a 'change' event after this so that udev wakes up and acts on the rules for virtio-ports (currently there's only one rule that creates a symlink from the 'name' to the actual char device). Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6Linus Torvalds2010-03-194-33/+43
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: tty_port,usb-console: Fix usb serial console open/close regression tty: cpm_uart: use resource_size() tty_buffer: Fix distinct type warning hvc_console: Fix race between hvc_close and hvc_remove uartlite: Fix build on sparc. tty: Take a 256 byte padding into account when buffering below sub-page units Revert "tty: Add a new VT mode which is like VT_PROCESS but doesn't require a VT_RELDISP ioctl call"
| * | tty_port,usb-console: Fix usb serial console open/close regressionJason Wessel2010-03-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit e1108a63e10d344284011cccc06328b2cd3e5da3 ("usb_serial: Use the shutdown() operation") breaks the ability to use a usb console starting in 2.6.33. This was observed when using console=ttyUSB0,115200 as a boot argument with an FTDI device. The error is: ftdi_sio ttyUSB0: ftdi_submit_read_urb - failed submitting read urb, error -22 The handling of the ASYNCB_INITIALIZED changed in 2.6.32 such that in tty_port_shutdown() it always clears the flag if it is set. The fix is to add a variable to the tty_port struct to indicate when the tty port is a console. CC: Alan Cox <alan@linux.intel.com> CC: Alan Stern <stern@rowland.harvard.edu> CC: Oliver Neukum <oliver@neukum.org> CC: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | tty_buffer: Fix distinct type warningFang Wenqi2010-03-191-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CC drivers/char/tty_buffer.o drivers/char/tty_buffer.c: In function ‘tty_insert_flip_string_fixed_flag’: drivers/char/tty_buffer.c:251: warning: comparison of distinct pointer types lacks a cast drivers/char/tty_buffer.c: In function ‘tty_insert_flip_string_flags’: drivers/char/tty_buffer.c:288: warning: comparison of distinct pointer types lacks a cast Fix it by replacing min() with min_t() in tty_insert_flip_string_flags and tty_insert_flip_string_fixed_flag(). Signed-off-by: Fang Wenqi <antonf@turbolinux.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | hvc_console: Fix race between hvc_close and hvc_removeAmit Shah2010-03-191-10/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Alan pointed out a race in the code where hvc_remove is invoked. The recent virtio_console work is the first user of hvc_remove(). Alan describes it thus: The hvc_console assumes that a close and remove call can't occur at the same time. In addition tty_hangup(tty) is problematic as tty_hangup is asynchronous itself.... So this can happen hvc_close hvc_remove hung up ? - no lock tty = hp->tty unlock lock hp->tty = NULL unlock notify del kref_put the hvc struct close completes tty is destroyed tty_hangup dead tty tty->ops will be NULL NULL->... This patch adds some tty krefs and also converts to using tty_vhangup(). Reported-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Amit Shah <amit.shah@redhat.com> CC: Alan Cox <alan@lxorguk.ukuu.org.uk> CC: linuxppc-dev@ozlabs.org CC: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | Revert "tty: Add a new VT mode which is like VT_PROCESS but doesn't require ↵Greg Kroah-Hartman2010-03-191-20/+19
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | a VT_RELDISP ioctl call" This reverts commit eec9fe7d1ab4a0dfac4cb43047a7657fffd0002f. Ari writes as the reason this should be reverted: The problems with this patch include: 1. There's at least one subtlety I overlooked - switching between X servers (i.e. from one X VT to another) still requires the cooperation of both X servers. I was assuming that KMS eliminated this. 2. It hasn't been tested at all (no X server patch exists which uses the new mode). As he was the original author of the patch, I'll revert it. Cc: Ari Entlich <atrigent@ccs.neu.edu> Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds2010-03-191-0/+10
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: driver core: numa: fix BUILD_BUG_ON for node_read_distance driver-core: document ERR_PTR() return values kobject: documentation: Update to refer to kset-example.c. sysdev: the cpu probe/release attributes should be sysdev_class_attributes kobject: documentation: Fix erroneous example in kobject doc. driver-core: fix missing kernel-doc in firmware_class Driver core: Early platform kernel-doc update sysfs: fix sysfs lockdep warning in mlx4 code sysfs: fix sysfs lockdep warning in infiniband code sysfs: fix sysfs lockdep warning in ipmi code sysfs: Initialised pci bus legacy_mem field before use sysfs: use sysfs_bin_attr_init in firmware class driver
| * | sysfs: fix sysfs lockdep warning in ipmi codeGreg Kroah-Hartman2010-03-191-0/+10
| |/ | | | | | | | | | | | | | | | | | | | | | | | | This fixes a sysfs lockdep warning in the ipmi code. Thanks to Eric Biederman and Yinghai Lu for the original versions of the patch, unfortunatly they did not submit them in a form they could be applied in. Cc: Yinghai Lu <yinghai@kernel.org> Cc: Eric Biederman <ebiederm@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | hpet: use for_each_set_bit()Akinobu Mita2010-03-171-3/+1
|/ | | | | | | | | | Replace open-coded loop with for_each_set_bit(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: Bob Picco <bob.picco@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2010-03-131-1/+1
|\ | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, k8 nb: Fix boot crash: enable k8_northbridges unconditionally on AMD systems x86, UV: Fix target_cpus() in x2apic_uv_x.c x86: Reduce per cpu warning boot up messages x86: Reduce per cpu MCA boot up messages x86_64, cpa: Don't work hard in preserving kernel 2M mappings when using 4K already
| * x86, k8 nb: Fix boot crash: enable k8_northbridges unconditionally on AMD ↵Borislav Petkov2010-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | systems de957628ce7c84764ff41331111036b3ae5bad0f changed setting of the x86_init.iommu.iommu_init function ptr only when GART IOMMU is found. One side effect of it is that num_k8_northbridges is not initialized anymore if not explicitly called. This resulted in uninitialized pointers in <arch/x86/kernel/cpu/intel_cacheinfo.c:amd_calc_l3_indices()>, for example, which uses the num_k8_northbridges thing through node_to_k8_nb_misc(). Fix that through an initcall that runs right after the PCI subsystem and does all the scanning. Then, remove initialization in gart_iommu_init() which is a rootfs_initcall and we're running before that. What is more, since num_k8_northbridges is being used in other places beside GART IOMMU, include it whenever we add AMD CPU support. The previous dependency chain in kconfig contained K8_NB depends on AGP_AMD64|GART_IOMMU which was clearly incorrect. The more natural way in terms of hardware dependency should be AGP_AMD64|GART_IOMMU depends on K8_NB depends on CPU_SUP_AMD && PCI. Make it so Number One! Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Joerg Roedel <joerg.roedel@amd.com> LKML-Reference: <20100312144303.GA29262@aftab> Signed-off-by: Ingo Molnar <mingo@elte.hu> Tested-by: Joerg Roedel <joerg.roedel@amd.com>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-03-1211-789/+10
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits) doc: fix typo in comment explaining rb_tree usage Remove fs/ntfs/ChangeLog doc: fix console doc typo doc: cpuset: Update the cpuset flag file Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed Remove drivers/parport/ChangeLog Remove drivers/char/ChangeLog doc: typo - Table 1-2 should refer to "status", not "statm" tree-wide: fix typos "ass?o[sc]iac?te" -> "associate" in comments No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h devres/irq: Fix devm_irq_match comment Remove reference to kthread_create_on_cpu tree-wide: Assorted spelling fixes tree-wide: fix 'lenght' typo in comments and code drm/kms: fix spelling in error message doc: capitalization and other minor fixes in pnp doc devres: typo fix s/dev/devm/ Remove redundant trailing semicolons from macros fix typo "definetly" -> "definitely" in comment tree-wide: s/widht/width/g typo in comments ... Fix trivial conflict in Documentation/laptops/00-INDEX
| * \ Merge branch 'for-next' into for-linusJiri Kosina2010-03-0811-789/+10
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: Documentation/filesystems/proc.txt arch/arm/mach-u300/include/mach/debug-macro.S drivers/net/qlge/qlge_ethtool.c drivers/net/qlge/qlge_main.c drivers/net/typhoon.c
| | * | Remove drivers/char/ChangeLogJonathan Corbet2010-02-181-775/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ChangeLog file under drivers/char is 30K of stuff dedicated to the mid-90's TTY exploits of Ted Ts'o; it has been updated once since 1998 - and that was in 2001. It's interesting history, but we don't normally carry that kind of history inline with the code. Let's remove it. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Acked-by: Alan Cox <alan@linux.intel.com> Acked-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * | tree-wide: Assorted spelling fixesDaniel Mack2010-02-098-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In particular, several occurances of funny versions of 'success', 'unknown', 'therefore', 'acknowledge', 'argument', 'achieve', 'address', 'beginning', 'desirable', 'separate' and 'necessary' are fixed. Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Joe Perches <joe@perches.com> Cc: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * | vt: remove unused variablesShahar Havivi2010-02-051-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unused fields in drivers/char/vt.c variables orig_buf and orig_count are assigned but never used. Signed-off-by: Shahar Havivi <shaharh@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * | tree-wide: fix typos "ammount" -> "amount"Uwe Kleine-König2010-02-051-1/+1
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| | * | Fix misspellings of "truly" in comments.Adam Buchbinder2010-02-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Some comments misspell "truly"; this fixes them. No code changes. Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | | drivers/char/mmtimer.c: eliminate useless codeJulia Lawall2010-03-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable x is initialized twice to the same (side effect-free) expression. Drop one initialization. A simplified version of the semantic match that finds this problem is: (http://coccinelle.lip6.fr/) // <smpl> @forall@ idexpression *x; identifier f!=ERR_PTR; @@ x = f(...) ... when != x ( x = f(...,<+...x...+>,...) | * x = f(...) ) // </smpl> Stefan observed: The next x = rb_entry(mn->next, struct mmtimer, list); is preceded by a test whether mn->next is NULL. Unless that test is redundant too, your patch fixes a potential NULL pointer dereference, introduced by commit cbacdd95 "SGI Altix mmtimer: allow larger number of timers per node" in 2.6.26. Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Dimitri Sivanich <sivanich@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | ldisc n_tty: add new method n_tty_inherit_ops()Rodolfo Giometti2010-03-121-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This new method can be used to init a new struct tty_ldisc_ops as the default tty_ldisc_N_TTY struct. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Greg KH <greg@kroah.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Alexander Gordeev <lasaine@lvk.cs.msu.su> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | ipmi: fix slave_addrs setting to actually workBela Lubkin2010-03-121-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Actually use the slave_addrs module parameter if it is specified, and make things consistent about passing zero in for the slave address for the default. Signed-off-by: Bela Lubkin <blubkin@vmware.com> Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | ipmi: add parameter to limit CPU usage in kipmidMartin Wilck2010-03-121-2/+64
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases kipmid can use a lot of CPU. This adds a way to tune the CPU used by kipmid to help in those cases. By setting kipmid_max_busy_us to a value between 100 and 500, it is possible to bring down kipmid CPU load to practically 0 without loosing too much ipmi throughput performance. Not setting the value, or setting the value to zero, operation is unaffected. Signed-off-by: Martin Wilck <martin.wilck@ts.fujitsu.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Cc: Jean Delvare <jdelvare@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | copy_signal() cleanup: clean tty_audit_fork()Veaceslav Falico2010-03-121-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unneeded initialization in tty_audit_fork(). It is called only via copy_signal() and is useless after the kmem_cache_zalloc() was used. Signed-off-by: Veaceslav Falico <vfalico@redhat.com> Cc: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | drivers/char/mem.c: cleanupsAndrew Morton2010-03-121-102/+102
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - fix switch statement layout - fix whitespace stuff - fix comment layout - remove unneeded inlining - use __weak - remove trailing whitespace - move uncached_access() inside `#ifndef __HAVE_PHYS_MEM_ACCESS_PROT' - it is otherwise unused. Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | /dev/mem: dont allow seek to last pageWu Fengguang2010-03-121-6/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So as to return a uniform error -EOVERFLOW instead of a random one: # kmem-seek 0xfffffffffffffff0 seek /dev/kmem: Device or resource busy # kmem-seek 0xfffffffffffffff1 seek /dev/kmem: Block device required Suggested by OGAWA Hirofumi. Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | [S390] hvc_iucv: allocate memory buffers for IUCV in zone DMAHendrik Brueckner2010-03-081-2/+4
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The device driver must allocate memory for IUCV buffers with GFP_DMA, because IUCV cannot address memory above 2GB (31bit addresses only). Because the IUCV ignores the higher bits of the address, sending and receiving IUCV data with this driver might cause memory corruptions. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/amit/virtio-consoleLinus Torvalds2010-03-071-13/+16
|\ \ \ | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/amit/virtio-console: virtio: console: Use better variable names for fill_queue operation virtio: console: Fix type of 'len' as unsigned int
| * | | virtio: console: Use better variable names for fill_queue operationAmit Shah2010-03-041-12/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We want to keep track of the number of buffers added to a vq. Use nr_added_bufs instead of 'ret'. Also, the users of fill_queue() overloaded a local 'err' variable to check the numbers of buffers allocated. Use nr_added_bufs instead of err. Signed-off-by: Amit Shah <amit.shah@redhat.com> Reported-by: Juan Quintela <quintela@redhat.com>
| * | | virtio: console: Fix type of 'len' as unsigned intAmit Shah2010-03-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We declare 'len' as int type but it should be 'unsigned int', as get_buf() wants it to be. Signed-off-by: Amit Shah <amit.shah@redhat.com> Reported-by: Juan Quintela <quintela@redhat.com>
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